2 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali/internal/event/images/encoded-buffer-image-impl.h>
22 #include <cstring> // for memcpy
25 #include <dali/public-api/object/type-registry.h>
26 #include <dali/devel-api/common/ref-counted-dali-vector.h>
27 #include <dali/internal/event/common/thread-local-storage.h>
28 #include <dali/integration-api/platform-abstraction.h>
38 /** Raw bytes of a resource laid out exactly as it would be in a file, but in memory. */
39 typedef Dali::RefCountedVector<uint8_t> RequestBuffer;
40 /** Counting smart pointer for managing a buffer of raw bytes. */
41 typedef IntrusivePtr<RequestBuffer> RequestBufferPtr;
43 } // unnamed namespace
45 EncodedBufferImagePtr EncodedBufferImage::New( const uint8_t * const encodedImage,
46 std::size_t encodedImageByteCount,
47 ImageDimensions size, FittingMode::Type fittingMode, SamplingMode::Type samplingMode,
48 bool orientationCorrection )
50 DALI_ASSERT_DEBUG( encodedImage && "Null image pointer passed-in for decoding from memory." );
51 DALI_ASSERT_DEBUG( encodedImageByteCount > 0U && "Zero size passed for image resource in memory buffer." );
52 DALI_ASSERT_ALWAYS( encodedImage && (encodedImageByteCount != 0) );
53 // SEGV early before we allocate anything if the caller passed in an invalid
54 // input buffer by reading both ends of it:
55 DALI_ASSERT_ALWAYS( static_cast<int>( encodedImage[0] + encodedImage[encodedImageByteCount-1] ) != -1 );
57 EncodedBufferImagePtr image( new EncodedBufferImage() );
58 image->Initialize(); // Second stage initialization
60 Dali::Integration::BitmapResourceType resourceType( size, fittingMode, samplingMode, orientationCorrection );
61 RequestBufferPtr buffer( new RequestBuffer );
62 buffer->GetVector().Resize( encodedImageByteCount );
63 // Resize() won't throw on failure, so avoid a SEGV if the allocation failed:
64 DALI_ASSERT_ALWAYS( buffer->GetVector().Size() >= encodedImageByteCount );
66 memcpy( &(buffer->GetVector()[0]), encodedImage, encodedImageByteCount );
68 // Get image size from buffer
69 Dali::Integration::PlatformAbstraction& platformAbstraction = Internal::ThreadLocalStorage::Get().GetPlatformAbstraction();
70 const ImageDimensions expectedSize = platformAbstraction.GetClosestImageSize( buffer, size, fittingMode, samplingMode, orientationCorrection );
71 image->mWidth = static_cast<unsigned int>( expectedSize.GetWidth() );
72 image->mHeight = static_cast<unsigned int>( expectedSize.GetHeight() );
74 // Load the image synchronously
75 Integration::BitmapPtr bitmap = platformAbstraction.DecodeBuffer( resourceType, &(buffer->GetVector()[0]), encodedImageByteCount );
79 unsigned width = bitmap->GetImageWidth();
80 unsigned height = bitmap->GetImageHeight();
83 Pixel::Format format = bitmap->GetPixelFormat();
84 image->mTexture = Texture::New( Dali::TextureType::TEXTURE_2D, format, width, height );
86 //Upload data to the texture
87 uint32_t bufferSize = bitmap->GetBufferSize();
88 PixelDataPtr pixelData = PixelData::New( bitmap->GetBufferOwnership(), bufferSize, width, height, format,
89 static_cast< Dali::PixelData::ReleaseFunction >( bitmap->GetReleaseFunction() ) );
90 image->mTexture->Upload( pixelData );
92 image->mWidth = size.GetWidth();
93 if( image->mWidth == 0 )
95 image->mWidth = width;
98 image->mHeight = size.GetHeight();
99 if( image->mHeight == 0 )
101 image->mHeight = height;
106 image->mTexture = Texture::New( Dali::TextureType::TEXTURE_2D, Pixel::RGBA8888, 0u, 0u );
107 image->mWidth = image->mHeight = 0u;
113 } // namespace Internal